John Colby, MD, PHD
Diagnostic Radiology · Greenbrae, CA
John Colby, MD, PHD is a diagnostic radiology in Greenbrae, CA with about 12 yrs in practice.
- SpecialtyDiagnostic Radiology
- Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE (2014)
- TelehealthNot reported
- Practice size29 clinicians
- Medicare assignmentAccepts assignment (Medicare-approved amount as full payment)
- Medicare activity~5,873 patients across 9,931 services, avg age 76
Common services
| Service | Medicare services | Medicare allows | |
|---|---|---|---|
| X-ray of chest, 1 view | 1,009 | $10 | See prices → |
| Ct scan head or brain without contrast | 571 | $46 | See prices → |
| Ct scan of abdomen and pelvis with contrast | 365 | $101 | See prices → |
| X-ray of shoulder, minimum of 2 views | 329 | $11 | See prices → |
| X-ray of hip, 2-3 views | 308 | $13 | See prices → |
| X-ray of knee, 3 views | 283 | $11 | See prices → |
| Mri scan of brain without contrast | 280 | $81 | See prices → |
| X-ray of knee, 4 or more views | 263 | $13 | See prices → |
| X-ray of lower and sacral spine, 2-3 views | 238 | $13 | See prices → |
| X-ray of chest, 2 views | 232 | $12 | See prices → |
| Mri scan of brain before and after contrast | 220 | $127 | See prices → |
| Mri scan of lower spinal canal without contrast | 200 | $83 | See prices → |
Hospital affiliations
Source: CMS Medicare Physician & Other Practitioners and the Doctors & Clinicians National Downloadable File (most recent release). Counts reflect Original Medicare activity only and are not a measure of quality. “Medicare allows” is the Medicare fee schedule amount — not what an insured or cash patient pays; for patient prices see the linked procedure pages. Always confirm a clinician’s current details with their office.